Recyclable film for a pouch and a pouch assembly
AssigneeSig Combibloc Services AG
InventorDavid Bellmore
Life of this patent
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Abstract
A film for a pouch having a central layer, a first LLDPE tie layer, a second LLDPE tie layer, an outside HDPE layer, and inside HDPE layer and an inner LLDPE layer. The central layer is an ethylene EVOH, having an inside and an outside opposite the inside and a thickness. The first LLDPE tie layer is on the inside of the EVOH. The second LLDPE tie layer is on the outside of the EVOH. The at least one outside HDPE layer on an outside of the second LLDPE tie layer opposite the EVOH layer. The at least one inside HDPE layer on an inside of the first LLDPE tie layer opposite the EVOH layer. The inner LLDPE layer on an innermost of the at least one inside HDPE layer. The inside PE thickness being at least twice the outside PE thickness.
Claims16
A unitary co-extruded film for a pouch comprising:
- a central layer comprising an EVOH, having an inside and an outside opposite the inside and a thickness;
- a first LLDPE tie layer directly in contact with the inside of the EVOH and a second LLDPE tie layer directly in contact with the outside of the EVOH;
- at least one outside HDPE layer directly in contact with an outside of the second LLDPE tie layer opposite the EVOH layer;
- at least one inside HDPE layer directly in contact with an inside of the first LLDPE tie layer opposite the EVOH layer;
- and
- an inner LLDPE layer directly in contact with an innermost one of the at least one inside HDPE layer,
- wherein the inner LLDPE layer, first LLDPE tie layer and the at least one inside HDPE layer define an inside PE thickness and wherein the second LLDPE tie layer and the at least one outside HDPE layer define an outside PE thickness, with the inside PE thickness being at least twice the thickness of the outside PE thickness.
Dependencies are inferred from the claim text.